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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8146434 | Apparatus for measuring vibration characteristics of head gimbal assembly An apparatus for measuring the vibration characteristics of a head gimbal assembly can grasp resonant characteristics at high frequencies and efficiently measure the vibration characteristics of the head gimbal assembly, the apparatus has a shaker head to which the ... | 04/03/2012 |
| 8113057 | Switched resonant ultrasonic power amplifier system A switched resonant power amplifier system for ultrasonic transducers is disclosed. The system includes an amplifier that receives and processes a driver output signal for generating a drive signal that is provided to an ultrasonic device for controlling output of t... | 02/14/2012 |
| 7975551 | Piezoelectric vibrator A piezoelectric vibrator including a pair of first piezoelectric elements having the same rectangular parallelepiped shape and polarized in opposite directions; and a pair of second piezoelectric elements, having the same rectangular parallelepiped shape and respect... | 07/12/2011 |
| 7793547 | Self-supporting and self-aligning vibration excitator A vibration excitator is described, comprising: a main body (2); a stinger (3) which is adapted to move relative to the main body (2), in a particular working direction; an actuator (5) coupled to the main body (2) and the stinger ... | 09/14/2010 |
| 7644619 | Piezoelectric vibrator and ultrasonic motor having piezoelectric vibrator A piezoelectric vibrator and an ultrasonic motor having the piezoelectric vibrator. A piezoelectric vibrator has a multilayered piezoelectric actuator, with special internal and surface electrodes making the body vibrate in a longitudinal and bending direction when ... | 01/12/2010 |
| 7549340 | Apparatus for measuring vibration characteristic of head gimbal assembly An apparatus surely measures the vibration characteristic of a head gimbal assembly and has a wide range of resonance frequencies to be set, the apparatus has a first laser Doppler vibrometer to detect a vibration velocity of a shaker, a second laser Doppler vibrome... | 06/23/2009 |
| 7383732 | Device for inspecting micro structure, method for inspecting micro structure and program for inspecting micro structure Test sound wave is outputted from a speaker. A movable part of a three-axis acceleration sensor, which is a micro structure of a chip to be tested TP, moves due to the arrival of the test sound wave which is compression wave outputted from the speaker, that is, due ... | 06/10/2008 |
| 7363818 | Programmable vibrator A pneumatic vibrator for generating a series of force impulses whose frequency, duration, magnitude and shape can be statically and dynamically programmed by varying mechanical, pneumatic, or hydraulic parameters or a combination thereof. ... | 04/29/2008 |
| 7363708 | Method of assembling multiple port assemblies in a cavitation chamber A method of assembling multiple port assemblies in a cavitation chamber is provided. The method is comprised of boring at least two ports of different sizes in a cavitation chamber wall of the cavitation chamber. The external port diameter of the smaller port is sma... | 04/29/2008 |
| 7320455 | Instrumented platform for vibration-sensitive equipment A platform that includes a vibration sensor located within an inner core of a table. The table may have a first plate that supports a vibration-sensitive payload. The first plate may be separated from a second plate by the inner core. The sensor can be located withi... | 01/22/2008 |
| 7318307 | Method and device for packaging and transporting electronic components The invention relates to an apparatus and a method for packaging and for transporting electronic devices. The devices include coverings made of a material that shrinks under the action of temperature that are pressed into receptacles of a belt-type carrier body. Ele... | 01/15/2008 |
| 7299698 | Vibration test module having controllable vibration attributes The present vibration test module enables a test engineer in the field of vibration test systems to precisely implement a vibration environment that is applicable to a wide range of applications and performance characteristics. The vibration test module comprises ad... | 11/27/2007 |
| 7282925 | Apparatus to facilitate functional shock and vibration testing of device connections and related method An apparatus and associated method are disclosed for facilitating the testing of device connections, including functional shock and vibration testing of peripheral card slots or any other desired connector interface. In part, a power supply located on the peripheral... | 10/16/2007 |
| 7267010 | Inertial mass guided single axis vibration test machine A single axis vibration test system includes a vibration force generator or “shaker” which can be used with a head expander, and separate pairs of hydrostatic self-aligning sliding bearings connecting two large reaction masses to the head expander. Preload force... | 09/11/2007 |
| 7255005 | Piezoelectric vibrating gyro element and gyro sensor A piezoelectric vibrating gyro element is constructed by crystal and includes at least in the same plane a base portion; a pair of vibrating arms for detection extended out from the base portion to both sides in a straight line shape, and having groove portions; a w... | 08/14/2007 |
| 7245057 | Micro-electromechanical structure resonator frequency adjustment using radiant energy trimming and laser/focused ion beam assisted deposition The invention relates to a microbeam oscillator. Tuning of the oscillator is carried out by addition or subtraction of material to an oscillator member in order to change the mass of the oscillator member. ... | 07/17/2007 |
| 7231094 | Low-power signal processing using MEMS Apparatus and methods for performing a Fourier transform mechanically, using an array of one or more resonators. By tuning the resonators so that their natural frequencies correspond to harmonics of an input signal, the vibration of the resonators in response to the... | 06/12/2007 |
| 7227902 | Method and apparatus for digital channelisation and de-channelisation The present invention relates generally to the problem of filtering, decimation or interpolation and frequency conversion in the digital domain, and more particularly to its use in wideband multichannel receiver, channelization, and transmitter, de-channelization, s... | 06/05/2007 |
| 7213461 | Torsional shaker apparatus for inspecting rotatable power generation machinery Apparatus for applying torsional vibration to a rotating machine is provided. In one exemplary embodiment the apparatus includes a permanent magnet machine (12) connected to the rotating machine (22) and configured to generate a three-phase AC output v... | 05/08/2007 |
| 7210350 | Vibrating gyro element, support structure of vibrating gyro element, and gyro sensor A vibrating gyro element includes in the same plane a base portion; a pair of vibrating arms for detection extended out of the base portion on both sides in a straight line shape; a pair of connecting arms extended-out from the base portion onto both sides in direct... | 05/01/2007 |
| 7187184 | Prevention of robot damage via capacitive sensor assembly A capacitive sensor assembly for a robot to prevent damage to the robot when it moves in an undesired manner is disclosed. The robot may be used in conjunction with semiconductor fabrication applications. The capacitive sensor assembly can include a hit contact, one... | 03/06/2007 |
| 7182912 | Fluid handling apparatus for an automated analyzer An analyzer for performing automated assay testing. The analyzer includes a storage and conveyor system for conveying cuvettes to an incubation or processing conveyor, a storage and selection system for test sample containers, a storage and selection system for reag... | 02/27/2007 |
| 7177007 | Temperature adjustment apparatus, exposure apparatus having the temperature adjustment apparatus, and semiconductor device manufacturing method An exposure apparatus including an illumination optical unit for irradiating exposure light, a stage for mounting a substrate and moving the substrate, a driving unit for driving the stage, a heater for applying heat to the stage, and a heat generation amount contro... | 02/13/2007 |
| 7162944 | Continuous reciprocating linear motion device A linear fluid piston device not requiring a fluid valve to operate and has operating piston stroke capabilities beyond traditional vibration fluid devices. The linear fluid device features (a) a movable piston means for linear motion, (b) a feature wherein said bod... | 01/16/2007 |
| 7131238 | Method of testing seismic braces Braces for bracing objects in structures against forces due to earthquakes are tested by subjecting components of the braces for attaching the braces to the object or structure to cyclic loading of approximately 15 cycles. The cyclic forces are applied to different ... | 11/07/2006 |
| 7133115 | Positioning device, exposure apparatus using the positioning device, and device production method A positioning device for positioning an object includes a movable member movable in X and Y directions, a top plate, disposed above the movable member, for mounting the object, at least four driving units, disposed between the top plate and the movable member, for d... | 11/07/2006 |
| 7114394 | Vibration test system and method for structures A vibration test system for structures comprises a vibration exciter that vibrates a real model portion, a load meter that measures a load, and a computer that receives a numerical model representing a numerical model portion. The computer includes a block that calc... | 10/03/2006 |
| 7106310 | Acoustic wave touch actuated switch An acoustic wave switch includes a substrate with an acoustic wave cavity formed therein such that the mass per unit area of the acoustic cavity is greater than the mass per unit area of the substrate adjacent the cavity. A transducer is mounted on the acoustic cavi... | 09/12/2006 |
| 7073104 | Method and system for applying testing voltage signal In a method and system for applying a testing voltage signal, a voltage source generates the testing voltage signal that ramps from an initial voltage to an intermediate voltage with a first ramping rate. In addition, the testing voltage then ramps from the intermed... | 07/04/2006 |
| 7062357 | Multiple region convolver with tapering A multiple region convolver includes tapering between successive models of a physical system. The tapering is performed during a transition period. ... | 06/13/2006 |
| 7051593 | Vibration testing apparatus and a method of vibration testing In order to provide a vibration testing apparatus which can have a large diameter without introducing undesirable rigid vibration modes, the vibration testing apparatus 1 comprises a support 2, at least one electromagnetic vibration generator 12... | 05/30/2006 |
| 7043986 | Vibrators and vibratory gyroscopes A vibrator for generating a signal for measuring a physical quantity using a vibrator is provided, including at least one bending vibration arm vibrating in bending mode along a specified plane and having a first end, an opposed second end, and first and second main... | 05/16/2006 |
| 7040171 | Carrier tape vibrator module A vibrator module adapted for use in a taper apparatus for advancing carrier tape having a plurality of compartments and for placing parts in the compartments. The vibrator module includes a motor that includes an output shaft that rotates in response to operation o... | 05/09/2006 |
| 7037268 | Low profile acoustic sensor arry and sensors with pleated transmission lines and related methods A low profile acoustic array (10) is configured to selectively respond to shear waves while rejecting compression wave energy in the frequency range of interest. One sensor array is configured as a linear strip with a frame segment having at least one longitu... | 05/02/2006 |
| 7032453 | Method and apparatus for the diagnosis of natural vibrations in a mechatronic system A method for the diagnosis of natural vibrations in a mechatronic system, includes at least one rigid body (WT1, WT2), which is moved relative to another rigid body (S) by means of at least one numerically-controlled drive, whereby the natural vibratio... | 04/25/2006 |
| 7031949 | Method and apparatus for generating input signals in a physical system A method and apparatus for controlling a physical system responsive to an input to produce a selected output comprises defining a virtual identity system that includes the physical system for receiving the input to provide an actual output. A quality of identity of ... | 04/18/2006 |
| 7000472 | Supporting mechanism for a vibrator and a vibrator unit including a supporting mechanism A gyro-vibrator supporting mechanism for supporting a gyro-vibrator via a support section upon a substrate in a vibration unit in which a vibrator is installed, the gyro-vibrator having a drive section to which a Coriolis force is applied upon an angular rotation of... | 02/21/2006 |
| 6992510 | Multiplier circuit with offset compensation and quadricorrelator A multiplier circuit has an analog multiplier with two signal inputs. A respective switching device is connected to each one of the two signal inputs of the analog multiplier for periodically reversing the polarity of the input voltages. A clock signal that can be f... | 01/31/2006 |
| 6975942 | Underground utility detection system and method Systems and methods provide for detection of one or more underground utilities. Radar waves and seismic waves of about the same wavelength are generated and communicated into a subsurface. Radar and seismic response signals resulting from communication of the radar ... | 12/13/2005 |
| 6958566 | Mechanical resonator device having phenomena-dependent electrical stiffness A mechanical resonator device which has a phenomena-dependent electrical stiffness is provided. The phenomena may be temperature or acceleration, for example. The device includes a substrate and a resonator supported above the substrate by supports. The device furth... | 10/25/2005 |
